easing vs modification

easing and modification both are nouns.

Word	Noun	Adjective	Verb	Adverb
easing	Yes	No	No	No
modification	Yes	No	No	No

As nouns, modification is a hypernym of easing; that is, modification is a word with a broader meaning than easing:

easing: a change for the better
modification: an event that occurs when something passes from one state or phase to another

Other hypernyms of easing include alteration, change.

easing (noun)	modification (noun)
the act of reducing something unpleasant (as pain or annoyance)	the act of making something different (as e.g. the size of a garment)
a change for the better	slightly modified copy; not an exact copy
	an event that occurs when something passes from one state or phase to another
	the grammatical relation that exists when a word qualifies the meaning of the phrase